JP7430051B2 - Display device for gas fire extinguishing equipment - Google Patents

Description

The present invention relates to a display device for gas-based fire extinguishing equipment that displays the status of extinguishing gas such as carbon dioxide and nitrogen released into a protected area when a fire occurs.

When gas-based fire extinguishing equipment releases fire extinguishing gas (inert gas) into a protected area in the event of a fire, the release indicator light installed at the entrance/exit of the protected area is lit or blinks to indicate, for example, ``Nitrogen gas filled, danger/no entry allowed''. A fire extinguishing agent release indicator (also referred to as a "release indicator light display") is displayed to prohibit people from entering the protected area.

Conventionally, as a display device for gas-based fire extinguishing equipment that displays a discharge indicator light, a light guide plate is equipped with an illuminated nameplate that visualizes the display content by laser-cutting it from the side by shining LED light from the side, and one side is held in a frame. A frameless structure is known in which the illuminated nameplate is exposed except for the frame, which allows for miniaturization, particularly thinness, and does not impair the design of the installation location (Patent Document 1).

Japanese Patent Application Publication No. 2018-105916 Japanese Patent Application Publication No. 2001-061984

However, the above-mentioned conventional display device for gas-based fire extinguishing equipment requires expensive laser processing equipment, and it takes several tens of seconds, for example, to laser-process the display content such as "Nitrogen gas filled danger/no trespassing". There are problems in that it takes a considerable amount of time and increases manufacturing costs.

Furthermore, because conventional illuminated nameplates have a frameless structure, there is a problem that they can be damaged if an object hits them while they are installed above the entrance/exit door of a protected area.

Also, during inspection, it is desirable to check the operation of the display device for gas-based fire extinguishing equipment. However, gas fire extinguishing equipment has a manual mode that starts based on the manual operation of the control box, and an automatic mode that starts based on the two-line alarm of the fire detector. Fire extinguishing gas is released into the compartment, and at this time an extinguishing agent fullness indicator is displayed.During inspections, a special mechanism is required to establish the predetermined starting conditions without releasing extinguishing gas, and the display device for gas-based fire extinguishing equipment is required. There is a problem in which the operation cannot be easily confirmed.

The present invention provides a display device for gas-based fire extinguishing equipment that reduces the manufacturing cost of illuminated nameplates, ensures sufficient strength for the frameless portion of the illuminated nameplates, and allows easy confirmation of the operation of the illuminated nameplates during inspection. The purpose is to provide.

(First invention)
The present invention is a display device for gas-based fire extinguishing equipment, comprising:
First printing in which the first light guide layer and the second light guide layer are arranged with a predetermined width apart, and the first predetermined display content is printed on the surface of the first light guide layer on the second light guide layer side. an illuminated nameplate having a laminated structure in which a second printed layer is formed, and a second printed layer is formed with a second predetermined display content printed on the surface of the second light guiding layer on the first light guiding layer side;
A device body that holds an illuminated nameplate;
Illumination means for making display content visible by inputting light from either or both of the end faces of the first light guide layer and the second light guide layer;
It is characterized by having the following.

(Second invention)
The present invention is a display device for gas-based fire extinguishing equipment, comprising:
A mirror layer with mirror surfaces on both sides is arranged between the first light guide layer and the second light guide layer, and a first printed layer with a first display content printed on the surface of the first light guide layer on the mirror layer side. an illuminated nameplate having a laminated structure in which a second printed layer is formed and a second predetermined display content is printed on the surface of the second light guiding layer on the mirror layer side;
A device body that holds an illuminated nameplate;
Illumination means for making display content visible by inputting light from either or both of the end faces of the first light guide layer and the second light guide layer;
It is characterized by having the following.

(Bending structure of light guide plate)
In the first and second inventions, the first light guide layer and the second light guide layer of the illuminated nameplate are constructed by bending a plate-shaped member.

(Light guide plate arrangement structure)
In the first light guide layer and the second light guide layer of the illuminated nameplate of the first invention, a light guide plate is disposed, respectively, and a spacer member for forming an air layer is disposed at a predetermined position between the light guide plates.

(Multiple arrangement structure of laminated structure)
Regarding the first invention, a plurality of illumination means are arranged within the device main body corresponding to the plurality of arrangement of the laminated structure.

(silk screen printing)
Regarding the display device for gas fire extinguishing equipment of the first and second inventions, the printed layer of the illuminated nameplate is formed by silk screen printing.

(Third invention: Illuminated nameplate attachment/detachment holding structure)
The present invention is a gas-based fire extinguisher that uses a light guide plate to hold a predetermined side of an illuminated nameplate in the device body, and allows light to enter from the end face of the illuminated nameplate using the illumination means in the device body to make predetermined display contents visible. In equipment display devices,
The main body of the apparatus is characterized in that it includes a detachable holding structure that detachably holds the illuminated nameplate.

(Configuration of detachable holding structure)
The attachment/detachment holding structure of the third invention is as follows:
A slit opening in the device body for attaching and detaching the illuminated nameplate;
a locking mechanism that locks when the illuminated nameplate is inserted through the slit opening and releases the lock when a predetermined removal operation is received from the outside;
Equipped with

(Configuration of locking mechanism)
The locking mechanism of the third invention is
a locking means that moves between a locking position and a locking release position;
urging means for urging the locking means to the locking position;
Equipped with
When the illuminated nameplate is inserted into the slit opening, the locking means is engaged with the locking recess formed in the illuminated nameplate to lock the illuminated nameplate, and the locking means is moved to the unlocking position by external removal operation. The illuminated nameplate is unlocked and can be removed.

(Structure of illuminated nameplate attachment/detachment jig)
An attachment/detachment jig used for attaching/detaching an illuminated nameplate in the display device for gas fire extinguishing equipment according to the third invention,
A box-shaped case with an opening for storing an illuminated nameplate,
a lock release mechanism that releases the lock of the lock mechanism;
a support rod that supports the box-shaped case;
An attachment/detachment jig characterized by comprising:

(Fourth invention: Illuminated nameplate inspection jig)
The present invention is a gas-based fire extinguisher that uses a light guide plate to hold a predetermined side of an illuminated nameplate in the device body, and allows light to enter from the end face of the illuminated nameplate using the illumination means in the device body to make predetermined display contents visible. An inspection jig for inspecting a display device for equipment,
The device is characterized in that predetermined display contents can be visualized and inspected by projecting light from a built-in inspection illumination means onto an end surface of the illuminated nameplate that faces a predetermined side.

(Effect of the first invention)
According to the display device for gas fire extinguishing equipment of the first invention, the first and second predetermined display contents are formed as printed layers on the mutually opposing surfaces of the first light guide layer and the second light guide layer. As a result, printing takes only a very short time compared to conventional laser processing, and the printing equipment is cheaper and simpler than laser processing equipment, making it possible to reduce the manufacturing cost of illuminated nameplates.

In addition, by arranging the first light guide layer on which the first printed layer is formed and the second light guide layer on which the second print layer is formed separated by a predetermined width, the first light guide layer and the second light guide layer are separated by a predetermined width. To prevent light leakage when a light guide layer is irradiated with light from an end face, and to surely change and display different display contents.

(Effect of the second invention)
According to the display device for gas fire extinguishing equipment of the second invention, in addition to the same effect as the first invention of reducing manufacturing costs by using a printed layer as the display content, a mirror layer is used instead of the air layer of the first invention. By separating the illuminated nameplate into the front and back with the mirror layer, it functions as two independent illuminated nameplates. Display contents that are the same or different when viewed from the front can be displayed individually.

In addition, by arranging the mirror layer, the background on the side opposite to the mirror surface of the illuminated nameplate is normally reflected, and by being integrated with the background, the design of the surrounding environment is less affected, and the fire extinguishing gas At the time of emission, predetermined display contents such as the display of the emission indicator light are visualized in the background reflected on the mirror surface, making it possible to display clearly. For example, if the installation location is a white ceiling and wall, the illuminated nameplate will normally be the same color as the background, blending into the surroundings and not stand out, and when extinguishing gas is released, the illuminated nameplate will be a white color that matches the background. Display contents are visualized in red for clear display.

(Effects due to the bending structure of the light guide plate)
Further, in the first and second inventions, by configuring the first light guide layer and the second light guide layer of the illuminated nameplate by bending a plate-shaped member, one light guide plate can be It can be easily manufactured by bending it into a U-shape, and the lower end of the illuminated nameplate is bent into a U-shape, increasing its strength and preventing damage when an object hits the lower end of the illuminated nameplate while it is installed. Make it preventable.

(Effects due to the arrangement structure of the light guide plate)
Further, the illuminated nameplate of the first invention can be easily manufactured by arranging two light guide plates at the lower end with a spacer member interposed between them, and the strength can be increased by arranging the spacer member at the lower end, and the installation To prevent damage when an object hits the lower end of an illuminated nameplate in a state of

(Effects due to multiple laminated structure)
By arranging a plurality of the laminated structures of the first invention as necessary and correspondingly arranging a plurality of illumination means within the device main body, it is possible to switch and display four or more different display contents. Note that the plurality of display contents includes at least the display of a discharge indicator light (display of extinguishing agent discharge fullness).

(Effect of silk screen printing)
The display devices for gas-based fire extinguishing equipment according to the first and second inventions can be manufactured easily and at low cost by using silk screen printing for the printed layer of the illuminated nameplate.

(Third invention: Illuminated nameplate attachment/detachment holding structure)
According to the display device for gas-based fire extinguishing equipment of the third aspect of the invention, the illuminated nameplate can be attached to and removed from the device body as necessary, and the illuminated nameplate can be replaced or inspected in a removed state.

(Configuration of detachable holding structure)
Further, in the detachable holding structure of the third invention, when the illuminated nameplate is fitted into the slit opening of the device main body, the locking mechanism reliably locks and holds the plate, and when a predetermined removal operation is performed from the outside, the locking mechanism locks. can be released and easily removed. In addition, since the locking mechanism is placed inside the device body on the short side of the slit opening, the illuminated nameplate can be reliably attached and removed by locking and unlocking at both longitudinal ends of the illuminated nameplate. .

(Effect of locking mechanism)
Further, in the locking mechanism of the third invention, when the illuminated nameplate is inserted into the slit opening, the illuminated nameplate can be locked by engaging the locking means with the locking recess at the side end of the illuminated nameplate, and the illuminated nameplate can be locked from the outside. By moving the locking means to the unlocking position by the removal operation, the illuminated nameplate can be unlocked and easily removed.

(Effects due to the structure of the illuminated nameplate attachment/detachment jig)
In addition, the attachment/detachment jig of the third invention allows the locking mechanism of the device main body to be pushed into the box-shaped case provided at the tip of the support rod against the illuminated nameplate held in the device main body. The illuminated nameplate can be removed by releasing the lock, and to attach it to the device body, place the illuminated nameplate in a box-shaped case and push it into the slit opening of the device body, the locking mechanism will lock it, and the original It can be easily returned to the installed state.

(Fourth invention: Effect of inspection jig for illuminated nameplate)
In addition, in the fourth invention, by attaching the illuminated nameplate removed from the device main body to an inspection jig having the same configuration as the device main body, light is incident from the inspection illumination means on the end face of the illuminated nameplate to display contents. The operation of the illuminated nameplate can be easily confirmed without the need to install a special inspection mechanism in the gas fire extinguishing equipment.

Explanatory diagram showing the installation of gas fire extinguishing equipment display devices in protected areas FIG. 2 is an explanatory diagram showing an embodiment of the display device for gas-based fire extinguishing equipment according to the first invention, in which FIG. 2(A) is a front view when displaying a discharge indicator light, and FIG. 2(B) is a side view, and FIG. 2(C) shows a plane seen from below, and FIG. 2(D) shows a front view when switched to the evacuation guidance display. FIG. 3 is an explanatory diagram showing a longitudinal section of FIG. 2; FIG. 3 is an explanatory diagram showing an enlarged plan view from below of FIG. 2; FIG. 2 is an explanatory diagram showing a longitudinal section of an embodiment in which a plurality of sets of illuminated nameplates are provided. It is an explanatory view showing other embodiments of the illuminated nameplate according to the first invention. It is an explanatory view showing an embodiment of the illuminated nameplate concerning the 2nd invention. Explanatory diagram showing the installation of a display device for gas-based fire extinguishing equipment using the illuminated nameplate of Figure 7 in a protected compartment FIG. 7 is an explanatory diagram showing another embodiment of the illuminated nameplate according to the second invention. It is an explanatory view showing other embodiments of an illuminated nameplate. It is an explanatory view showing other embodiments of an illuminated nameplate. It is an explanatory view showing other embodiments of an illuminated nameplate. It is an explanatory view showing other embodiments of an illuminated nameplate. FIG. 14 is an explanatory diagram showing an embodiment of the attachment/detachment structure of the illuminated nameplate according to the third invention, with FIG. 14(A) showing a cross section, and FIG. 14(B) showing a partially sectional plane. FIG. 15 is an explanatory diagram showing an embodiment of the illumination nameplate attachment/detachment jig according to the third invention, with FIG. 15(A) showing the front and FIG. 15(B) showing the plane. FIG. 16 is an explanatory view showing a side surface of the illumination nameplate attachment/detachment jig shown in FIG. 15; 17(A) is a front view, FIG. 17(B) is a side view, and FIG. 17(C) is a top view. FIG. FIG. 18(A) is an explanatory diagram showing the removal operation of the illuminated nameplate using the attachment/detachment jig; FIG. 18(A) shows the state immediately before the attachment/detachment jig is removed, and FIG. 18(B) shows the state in which the illumination nameplate is unlocked. show. FIG. 19(A) is a plan view, FIG. 19(B) is a front view, and FIG. 19(C) is a partially cross-sectional side view of an embodiment of an inspection jig for an illuminated nameplate according to a fourth invention. shows. FIG. 6 is an explanatory diagram showing an inspection operation of an illuminated nameplate removed from the apparatus main body using an inspection jig.

[Embodiment of display device for gas fire extinguishing equipment: first invention]
(Overview of display device)
As shown in FIG. 1, the display device 10 for gas fire extinguishing equipment of this embodiment is composed of a device main body 12 and an illuminated nameplate 14, and is installed above a door 15 provided at the entrance of a room serving as a protected compartment 11. , when a predetermined extinguishing gas such as nitrogen is released into the protected area 11, a ``discharge indicator light'' (extinguishing agent discharge full indication) indicating ``Gas extinguishing agent is full, danger, no entry'' is displayed, for example, by lighting or flashing. In addition, if necessary, it is possible to perform a switching display in which an "evacuation guidance display" indicating, for example, the direction of an emergency exit, etc. is alternately switched with the display of the discharge indicator light.

(Configuration of display device)
As shown in FIG. 2, the main body 12 of the display device 10 for gas-based fire extinguishing equipment of this embodiment is an elongated box-shaped case (frame), with a slit opening 21 formed in the lower surface, and an illuminated nameplate 14 in the upper part. It is held with one side inserted.

The illuminated nameplate 14 has a frameless periphery from both ends to the lower end, excluding the housing portion of the device main body 12. Further, the size of the illuminated nameplate 14 is such that the length H of the display surface excluding the storage area of the device main body 12 is 8 centimeters or more, and the width L is 28 centimeters or more.

The device main body 12 is installed on the ceiling surface or the like above the door 15 provided at the entrance/exit of the protected compartment 11 as shown in FIG. 1 by passing screws or the like through mounting holes 20 provided at the four corners. Furthermore, locking pins 18 functioning as locking means are provided at both longitudinal ends of the device body 12, and the illuminated nameplate 14 inserted through the slit opening is held detachably by locking both ends thereof. When removing the illuminated nameplate 14 from the device main body 12, pulling the locking pin 18 outward manually or using an attachment/detachment jig to be described later releases the locking with the illuminated nameplate 14 and removes it.

When extinguishing gas is released in the event of a fire in the protected area 11, a release indicator light is displayed as shown in the display content 16a in FIG. In addition, the display contents when the display device 10 for gas fire extinguishing equipment is installed at the entrance of a cul-de-sac room (a room other than the protected compartment and the part adjacent to the protected compartment, where evacuation is not possible without passing through the part adjacent to the protected compartment) 16a is ``Gas extinguishing agent release - Caution during evacuation''.

In addition, the display device 10 for gas fire extinguishing equipment of this embodiment can switch the display content into two stages, and if necessary, the display content 16b in FIG. The display is switched to "Guidance Display".

(Composition of illuminated nameplate)
As shown in FIG. 3, the illuminated nameplate 14 is arranged such that the first light guide layer 24 and the second light guide layer 26 are arranged with an air space 28 separating them by a predetermined width, for example, 1 mm or less, and the first light guide layer 24 on the air layer 28 side, a first printed layer 30 is formed by silk screen printing a first predetermined display content, for example, "Display of emission indicator light" shown in FIG. A laminated layer in which a second printed layer 32 is formed on the surface of the light guide layer 26 on the air layer 28 side by silkscreen printing a second predetermined display content, for example, "display of evacuation guidance" shown in FIG. 2(D) in red. Equipped with structure.

Note that the thickness of the first printed layer 30 and the second printed layer 32 formed by silk screen printing is about several tens of microns, and the air layer 28 is, for example, in the range of 0.5 to 1 mm. Even if the second printed layer 32 is formed, the air layer 28 can be ensured between them.

In this embodiment, the first light guide layer 24 and the second light guide layer 26 of the illuminated nameplate 14 are configured by a U-shaped light guide plate 22 bent into a U shape. The U-shaped light guide plate 22 is made of, for example, a transparent acrylic resin, and in the plate state before being bent into a U shape, display contents are formed by silk screen printing using the first printed layer 30 and the second printed layer 32 on one plate surface. Then, the first printed layer 30 and the second printed layer 32 are bent into a U shape through a heat treatment so as to face each other.

The first printing layer 30 is printed by placing the front side of a silk screen with, for example, an "evacuation indicator display" on the plate surface, and the second printing layer 32 is printed with, for example, an "evacuation guidance display" on the same plate surface. By printing with the back side of the silk screen provided, the characters will be in the correct arrangement when viewed from the front, and the characters will be arranged in reverse when viewed from the back.

In this way, by bending one light guide plate into a U-shape, it is possible to easily manufacture the illuminated nameplate 14 that can switch and display the displayed contents. 22a increases the strength and prevents damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

Furthermore, in silk screen printing for forming the first printed layer 30 and second printed layer 32 of the illuminated nameplate 14, once a silk screen with display contents is made, the silk screen can be used for subsequent printing. Since the number of gas fire extinguishing equipment display devices required for one gas fire extinguishing equipment is not so large, there is no need for mass production, and it can be manufactured simply and easily at low cost.

(Device body)
As shown in FIG. 3, the device main body 12 has a circuit storage section 34 formed at the top following the slit opening 21 on the bottom surface, and a circuit board 36 arranged below a lid member 37 provided in the circuit storage section 34. As shown in FIG. 4, on the circuit board 36, a plurality of LEDs 38 are arranged in, for example, two even-numbered columns in the longitudinal direction, and lead wires 40 for inputting drive signals are taken out to the outside.

The upper end surfaces of the first light guide layer 24 and the second light guide layer 26 of the illumination nameplate 14 inserted through the slit opening 21 face the two rows of LEDs 38 arranged on the circuit board 36 as entrance surfaces 25 and 27 . Note that the slit opening 21 has a tapered opening edge to guide insertion of the illuminated nameplate 14.

When the LED 38 on the first light guide layer 24 side is driven to emit light, the light from the LED 38 enters the first light guide layer 24 from the incident surface 25, is randomly reflected within the first light guide layer 24, and then faces the air layer 28. The first printed layer 30 formed on the surface is illuminated, and when viewed from the front, the "display of the emission indicator light" shown in FIG. 2A is visualized in red, which is the printed color.

At this time, since the second light guide layer 26 is disposed with respect to the first light guide layer 24 through the air layer 28, the light entering the first light guide layer 24 is reflected at the interface with the air layer 28. The second printed layer 32 of the second light guide layer 26 is hardly illuminated, and the display content of the second printed layer 32 is the same as that of the first printed layer 30. It should not be to the extent that it interferes with the display.

Furthermore, when the LED 38 on the second light guide layer 26 side is driven to emit light, the light from the LED 38 enters the second light guide layer 26 from the incident surface 27 and illuminates the second printed layer 32 formed on the surface on the air layer 28 side. When viewed from the front, for example, the "evacuation guidance display" shown in FIG. 2(D) is visualized in red, which is the printing color, and can be seen through the transparent first light guide layer 24.

At this time, since the first light guide layer 24 is disposed with respect to the second light guide layer 26 through the air layer 28, the light entering the second light guide layer 26 is reflected at the interface with the air layer 28. The first printed layer 30 of the first light guide layer 24 is hardly illuminated, and the display content of the first printed layer 30 is not the same as that of the second printed layer 32. It should not be to the extent that it interferes with the display.

Note that the display content of the first printed layer 30 and the second printed layer 32 may be the same "display of the emission indicator light". In this case, the two rows of LEDs 38 on the first light guide layer 24 side and the second light guide layer 26 are driven to emit light simultaneously for visualization, and the first printed layer 30 and second printed layer 32 are visualized from the front. You will see the displayed contents overlap. For this reason, the printing positions with respect to the first light guide layer 24 and the second light guide layer 26 are adjusted so that the displayed contents of the first print layer 30 and the second print layer 32 do not shift when viewed from the user's eye position. This is desirable.

(Multiple arrangement structure of laminated structure)
The display device 10 for gas fire extinguishing equipment of this embodiment has a laminated structure of the illuminated nameplates 14 shown in FIG. ) may be provided.

The illumination nameplate 14 (14-1, 14-2) connects the first light guide layer 24 (24-1, 24-2) and the second light guide layer 26 (26-1, 26-2) with air at a predetermined interval. The layer 28 (28-1, 28-2) is disposed between the layers 28 (28-1, 28-2), and a different layer is placed on the surface of the first light guide layer 24 (24-1, 24-2) on the air layer 28 (28-1, 28-2) side. The first printed layer 30 (30-1, 30-2) is formed by silk screen printing the display contents, and the air layer 28 (28-1) of the second light guide layer 26 (26-1, 26-2) is formed. , 28-2) side is provided with a laminated structure in which a second printed layer 32 (32-1, 32-2) is formed by silk screen printing with other different display contents.

In the device main body 12, a plurality of LEDs 38 are arranged in four rows in the longitudinal direction on the circuit board 36 of the circuit storage section 34, and lead wires 40 (40-1, 40-2) for inputting drive signals are taken out to the outside.

For the four rows of LEDs 38 on the circuit board 36, the first light guide layer 24 (24-1, 24-2) and the second light guide layer 26 (26 -1, 26-2) face each other, and by driving any of the four rows of LEDs 38 to emit light, the first printed layer 30 (30-1, 30-2) or the second printed layer 32 (32-1, 32-2), the display content of any one of the four printing layers in total is visualized and displayed so that it can be seen from the front.

Here, the display contents switched and displayed by the display device 10 for gas-based fire extinguishing equipment shown in FIG. Select "Automatic", "Manual", "Fire extinguishing gas cut off", etc. as necessary.

In addition, the gas fire extinguishing equipment display device 10 installed at the entrance/exit of the cul-de-sac room must have a ``display inside the cul-de-sac'' that says ``Gas extinguishing agent release - be careful when evacuation'', and other than that, one of the above-mentioned signs should be displayed. Select the contents as necessary.

Furthermore, display contents in different languages such as Japanese, English, Korean, and Chinese may be prepared for the "display of the release indicator light" or the "display inside the cul-de-sac room" and the display may be switched in different languages such as Japanese, English, Korean, or Chinese.

(Embodiment of illuminated nameplate with light guide plate arranged)
The illuminated nameplate 14 of FIG. 6 does not use a U-shaped light guide plate, but instead uses the first light guide layer 24 and the second light guide layer 26 of the illuminated nameplate 14 as light guide plates 80 and 82, and between the light guide plates 80 and 82. A spacer portion 84 functioning as a spacer member for forming an air layer 28 at a predetermined position, for example, the lower part, is formed integrally with the light guide plate 80 of the first light guide layer 24 .

On the surface of the first light guide layer 24 formed by the light guide plate 80 on the side of the air layer 28, a first printed layer 30 with the display content of "Display of emission indicator light" is formed by silk screen printing. On the surface of the light guiding layer 26 on the air layer 28 side, a second printed layer 32 having a display content of, for example, "display of evacuation guidance" is formed by silk screen printing. Further, the device main body 12 to which the illuminated nameplate 14 of this embodiment is mounted has the same structure as that in FIG. 3.

Therefore, the illuminated nameplate 14 of this embodiment can be easily manufactured by arranging the two light guide plates 80 and 82 at the lower end with the spacer section 84 interposed between them, and the arrangement of the spacer section 84 at the lower end increases the strength. This makes it possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

Note that the structure of the illuminated nameplate 14 using the light guide plate of this embodiment may be applied to an embodiment in which a plurality of sets of illuminated nameplates 14 (14-1, 14-2) shown in FIG. 5 are arranged.

[Embodiment of illuminated nameplate with mirror layer: second invention]
(Composition of illuminated nameplate)
As shown in FIG. 7, the illuminated nameplate 14 of this embodiment is characterized in that a mirror layer (double-sided mirror plate) 86 is provided. The illuminated nameplate 14 has a mirror layer 86 with mirror surfaces 86a and 86b on both sides supported by a spacer 87 between the first light guide layer 24 and the second light guide layer 26. A first printed layer 30 is formed on the mirror layer 86 side surface of the second light guide layer 26 with predetermined display content, for example, "indication of the emission indicator light" printed by silk screen. A second printed layer 32 is formed by silk screen printing with the same display content as the first printed layer 30, for example, "display of emission indicator light".

Further, in this embodiment, the first light guide layer 24 and the second light guide layer 26 of the illuminated nameplate 14 are configured by a U-shaped light guide plate 22 bent in a U shape.

The illuminated nameplate 14 provided with the mirror layer 86 is held in the device main body 12 in the same way as in FIG. By driving the LEDs 38 in the row to emit light, the first printed layer 30 of the first light guide layer 24 and the second printed layer 32 of the second light guide layer 26 are illuminated, and for example, "gas emission indicator light display" is displayed. Visualize and display the message “Full of extinguishing agent, Danger/No entry”.

As shown in FIG. 8, the display device 10 for gas fire extinguishing equipment equipped with the illuminated nameplate 14 shown in FIG. The device main body 12 is arranged so that the display surface of the illuminated nameplate 14 is located.

Here, for example, the left side of the gas fire extinguishing equipment display device 10 in the figure is the front front, and the right side of the figure is the rear front, and the display contents of the illuminated nameplate 14 can be viewed from the front and back.

(Display function of display device for gas fire extinguishing equipment)
Normally, the background of the hallway wall, ceiling, etc. on the front side is reflected on the mirror surface 86a of the mirror layer 86 provided on the illuminated nameplate 14, and this background is visible through the first light guide layer 24. In addition, the mirror surface 86b of the mirror layer 86 provided on the illuminated nameplate 14 reflects the background of the hallway wall, ceiling, etc. on the rear front side, and this background can be visually recognized through the second light guide layer 26.

As a result, the illuminated nameplate 14 looks the same as the background of the ceiling or wall, and if the device body 12 also has the same background color, the display device 10 for gas fire extinguishing equipment will blend into the background and will hardly stand out, for example in a museum. Even if it is installed in a place such as the above, it will hardly affect the design of the space in which it is placed.

On the other hand, when extinguishing gas is released, the light from the LED 38 is incident on each of the first light guide layer 24 and the second light guide layer 26 separated by the mirror layer 86, and the first printed layer 30 and the second printed layer 32 are are individually illuminated, and when viewed from the front and rear fronts, the same message "Full of gas extinguishing agent, danger/no entry" is visualized in red in the background color of the illuminated nameplate 14.

In this case, leakage light of the light incident on the first light guide layer 24 and the second light guide layer 26 is reflected by each of the mirror surfaces 86a and 86b of the mirror layer 86 and returns to the front side. And the content displayed by the second printed layer 32 can be displayed more clearly.

Further, by arranging the mirror layer 86 between the first light guide layer 24 and the second light guide layer 26 that are formed by the U-shaped light guide plate 22, the strength of the illuminated nameplate 14 can be increased.

Furthermore, by configuring the first light guide layer 24 and the second light guide layer 26 with the U-shaped light guide plate 22 bent into a U shape with the mirror layer 86 sandwiched between them, the illuminated nameplate 14 can be manufactured easily. Furthermore, since the lower end of the illuminated nameplate 14 is formed into a U-shaped bent end 22a, the strength is increased, and it is possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

(Other embodiments of illuminated nameplates with mirror layers)
As shown in FIG. 9, the illuminated nameplate 14 of this embodiment does not use a U-shaped light guide plate, but instead uses the first light guide layer 24 and the second light guide layer 26 of the illuminated nameplate 14 as light guide plates 80 and 82, respectively. A mirror layer 86 having mirror surfaces 86a and 86b on both sides is arranged between the first light guide layer 24 and the second light guide layer 26, and predetermined display contents are displayed on the surface of the first light guide layer 24 on the mirror layer 86 side. For example, the first printed layer 30 is silk-screen printed with "indication of emission indicator", and the same display content as the first printed layer 30 is formed on the surface of the second light guide layer 26 on the mirror layer 86 side, for example, "indication of emission indicator". A second printed layer 32 is formed by silk-screen printing a message "display".

The illuminated nameplate 14 provided with the mirror layer 86 is held in the device main body 12 in the same way as in FIG. By driving the LEDs 38 in the row to emit light, the first printed layer 30 of the first light guide layer 24 and the second printed layer 32 of the second light guide layer 26 are illuminated, and for example, "gas emission indicator light display" is displayed. Visualize and display the message “Full of extinguishing agent, Danger/No entry”.

In this embodiment as well, by providing the mirror layer 86, the illuminated nameplate 14 blends into the background and is not noticeable during normal times, and when gas is released, the display contents can be displayed more clearly by reflection by the mirror layer 86.

Further, by arranging the mirror layer 86 between the light guide plates 80 and 82, the strength is increased, and it is possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

[Embodiments of illuminated nameplates with a single light-guiding layer]
(Embodiment using a U-shaped light guide plate)
As shown in FIG. 10, the illuminated nameplate 14 of this embodiment displays a single display content, and a light guide layer 24a and a protective layer 88 are arranged with an air layer 28 at a predetermined interval, A printed layer 30a is formed on the surface of the light layer 24a on the air layer 28 side by silk screen printing with predetermined display content, for example, "Display of emission indicator light". Further, the light guide layer 24a and the protective layer 88 are constituted by the U-shaped light guide plate 22. The protective layer 88 may be transparent like the light guiding layer 24a, or a sheet with a predetermined background color may be attached to the outer surface of the protective layer 88.

The device main body 12 to which the illuminated nameplate 14 of this embodiment is attached has the same structure as that shown in FIG. It is placed.

The illuminated nameplate 14 of this embodiment is configured by the U-shaped light guide plate 22 in which the light guide layer 24a and the protective layer 88 are bent into a U shape, so that the illuminated nameplate 14 can be easily manufactured. The lower end of the illuminated nameplate 14 is formed into a U-shaped bent end 22a, thereby increasing the strength and making it possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state. Note that the air layer 28 of this embodiment does not necessarily have to be provided since there is no problem of light leakage.

(Embodiment in which a light guide plate is arranged)
The illuminated nameplate 14 shown in FIG. 11 displays a single display content, and instead of using a U-shaped light guide plate, the light guide layer 24a is a light guide plate 80, and an air layer 28 is formed at a predetermined position of the light guide plate 80, for example at the bottom. A spacer portion 84 is formed that functions as a spacer member for forming a protective layer 88, and a protective plate 90 that forms a protective layer 88 is disposed via the spacer 84.

On the surface of the light guide layer 24a of the light guide plate 80 on the air layer 28 side, a printed layer 30a having a display content of "Display of emission indicator light" is formed by silk screen printing. The protection plate 90 may be a transparent member, a member with a predetermined background color, or a sheet with a predetermined background color attached thereto.

The device main body 12 to which the illuminated nameplate 14 of this embodiment is attached has the same structure as that shown in FIG. It is placed.

The illuminated nameplate 14 of this embodiment can be easily manufactured by arranging the light guide plate 80 and the protection plate 90 at the lower end with the spacer part 84 interposed therebetween, and the strength can be increased by arranging the spacer part 84 at the lower end. This makes it possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state. Note that the air layer 28 of this embodiment does not necessarily have to be provided since there is no problem of light leakage.

[Embodiment of an illuminated nameplate with a single light-guiding layer and a mirror layer]
(Embodiment using a U-shaped light guide plate)
As shown in FIG. 12, the illuminated nameplate 14 of this embodiment displays a single display content, and is further characterized in that it includes a mirror layer 86. The illumination nameplate 14 has a mirror layer 86 supported between the light guide layer 24a and the protective layer 88 with a spacer 87 interposed therebetween, and has predetermined display contents such as "Display of emission indicator light" on the surface on the light guide layer 24a side. '' is silk screen printed to form a printed layer 30a. Further, the light guide layer 24a and the protective layer 88 are constituted by the U-shaped light guide plate 22.

The protective layer 88 may be transparent like the light guiding layer 24a, or a sheet with a predetermined background color may be attached to the outer surface of the protective layer 88.

The device main body 12 to which the illuminated nameplate 14 of this embodiment is attached has the same structure as that shown in FIG. It is placed.

In this embodiment, by providing the mirror layer 86, the illuminated nameplate 14 blends into the background and is not noticeable during normal times, and when gas is released, the display contents can be displayed more clearly by reflection by the mirror layer 86.

Further, by arranging the mirror layer 86 between the light guide plates 80 and 82, the strength is increased, and it is possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

Further, by configuring the light guide layer 24a and the protective layer 88 by the U-shaped light guide plate 22 bent in a U shape, the illuminated nameplate 14 can be easily manufactured, and furthermore, the lower end of the illuminated nameplate 14 is shaped like a U-shape. The bent end portion 22a increases the strength and prevents damage when an object hits the lower end portion of the illuminated nameplate 14 in the installed state.

(Embodiment in which a light guide plate is arranged)
As shown in FIG. 13, the illuminated nameplate 14 of this embodiment displays a single display content, and instead of using a U-shaped light guide plate, the light guide layer 24a is used as the light guide plate 80, and the protective layer 88 is used for protection. A mirror layer 86 is arranged between the light guide plate 80 and the protection plate 90, and the light guide layer 24a side is a mirror surface 86a.

A printed layer 30a is formed on the light guide layer 24a side by silk screen printing with predetermined display content, for example, "display of emission indicator lamp". The protection plate 90 may be a transparent member, a member with a predetermined background color, or a sheet with a predetermined background color attached thereto.

In this embodiment, by providing the mirror layer 86, the illuminated nameplate 14 blends into the background and is not noticeable during normal times, and when gas is released, the display contents can be displayed more clearly by reflection by the mirror layer 86.

Further, by arranging the mirror layer 86 between the light guide plate 80 and the protection plate 90, the strength is increased, and it is possible to prevent damage when an object hits the lower end of the illuminated nameplate 14 in the installed state.

[Illuminated nameplate attachment/removal holding structure: third invention]
(Configuration of detachable holding structure)
As shown in FIG. 14, the display device 10 for gas-based fire extinguishing equipment holds one side of the upper part of the illuminated nameplate 14 using a light guide plate in the device body 12, and uses the LED in the device body 12 to illuminate the end surface of the illuminated nameplate 14. The display of the emission indicator lamp is visualized by entering light from the device body 12, and the present embodiment is characterized in that a removable holding structure for holding the illuminated name plate 14 in a detachable manner is provided on the main body 12 of the device.

The attachment/detachment holding structure of this embodiment has a slit opening 21 for attaching and detaching the illuminated nameplate 14 in the device main body 12, and is locked when the illuminated nameplate 14 is inserted through the slit opening 21, and a predetermined removal operation from the outside is performed. A locking mechanism 42 is provided which releases the lock when received.

The locking mechanism 42 includes a locking pin 18 that functions as a locking means, a slide hole 44, a stopper ring 45, and a coil spring 46. The locking pin 18 has a spherical tip 18a at its tip and a tapered head 18b at its rear end.

The locking pin 18 is inserted into the slide hole 44 of the device body 12, a coil spring 46 is arranged between the locking pin 18 and the stopper ring 45 fitted to the locking pin 18, and the spherical tip 18a is inserted into the locking recess 48 of the illuminated nameplate 14. is biased in the direction of engagement. Further, the upper corner portion of the locking recess 48 of the illuminated nameplate 14 is cut into a tapered shape to form a tapered guide surface 49.

To attach the illuminated name plate 14 to the device main body 12, when the upper end of the illuminated name plate 14 is inserted into the slit opening 21 of the device main body 12 and pushed in, the tapered guide surface 49 comes into contact with the spherical tip 18a of the locking pin 18, and the plate is pushed outward. It moves while being pushed out and engages with the locking recess 48 to hold the illuminated nameplate 14 on the device main body 12.

On the other hand, when removing the illuminated nameplate 14 from the device body 12, hold the tapered heads 18b located on both sides of the device body 12 and pull out the locking pin 18 to release the lock from the illuminated nameplate 14. Can be removed.

Therefore, the illuminated nameplate 14 can be easily attached to and removed from the apparatus main body 12 as needed, and the illuminated nameplate 14 can be replaced or inspected after being removed.

Note that the display device 10 for gas fire extinguishing equipment provided with the attachment/detachment holding structure of the present embodiment is not limited to the one using the illuminated nameplate 14 in which the display content is formed by the printed layer shown in FIGS. 1 to 13; for example, The present invention can be similarly applied to those using illuminated nameplates with display contents formed by laser processing.

(Illuminated nameplate attachment/detachment jig)
As shown in FIG. 15, this embodiment is a mounting/detachment jig that removes the illuminated nameplate 14 held on the device body 12 of the display device 10 for gas-based fire extinguishing equipment, and attaches and holds the removed illuminated nameplate 14 to the device body 12. 50.

The attachment/detachment jig 50 of this embodiment includes a box-shaped case 52, a lock release mechanism 60, and a support rod 56. The box-shaped case 52 has a box-shaped space in which the illuminated nameplate 14 can be stored, and a slit opening 54 is formed in the surface of the upper flange 58, and the opening edge of the slit opening 54 is a tapered surface.

The unlocking mechanism 60 is disposed on both sides of the box-shaped case 52 and is composed of a release fitting 62 with a release piece 66 and a shaft 64, and is rotatable by the shaft 64 on a rectangular support portion on both sides of the box-shaped case 52. The release fitting 62 is supported.

As shown in FIG. 17, the release fitting 62 has a shaft hole 64a in the U-shaped pinching portion of the fitting main body 63, and has a release piece 66 erected upward from the connecting portion of the pinching portion. The release piece 66 forms an engagement groove 68 that opens upward in a wedge shape, and when viewed from the side, the release piece 66 has a shape that rises vertically, then tapers inward, and rises vertically again. Furthermore, a spherical protrusion 69 is formed by punching or the like on the inside of the sandwiched portion where the shaft hole 64a is provided.

As shown in FIG. 16, the support rod 56 is long enough to reach the installation position of the display device 10 for gas fire extinguishing equipment shown in FIG. 1 or 8, and is provided with a grip 56a at the lower end.

(How to remove the illuminated nameplate)
When removing the illuminated nameplate 14 of the display device 10 for gas fire extinguishing equipment installed above the door of the entrance/exit of the protected compartment, remove the release metal fittings 62 of the holding/release mechanism 60 provided on both sides of the box-shaped case 52 as shown in FIGS. As shown in FIG. 16, it rotates upward about the shaft 64, and the release piece 66 stands upright. At this time, the protruding portion 69 of the release fitting 62 is strongly pressed against the rectangular support portion to hold the release piece 66 in an upright state.

Next, as shown in FIG. 18(A), when the box-shaped case 52 of the attachment/detachment jig 50 is aligned with the illuminated nameplate 14 of the device main body 12 and pushed up, the box-shaped case 52 is opened while storing the illuminated nameplate 14. The release piece 66 that is guided upward and stands up from the release metal fitting 62 moves as shown by arrow A toward the tapered portion of the tapered head 18b of the locking pin 18 protruding from the side end of the device main body 12. .

Further, when the box-shaped case 52 is pushed up, the tapered engagement groove 68 of the release piece 66 is pushed into the tapered head 18b of the locking pin 18, and the release piece 66 is pushed up. The tapered head 18b is pushed outward by contact with the tapered surface seen from the side, and the spherical tip 18a at the tip of the locking pin 18 separates from the locking recess 48 of the illuminated nameplate 14 to release the lock. However, the detached illuminated nameplate 14 is accommodated in the box-shaped case 52 and can be removed.

(How to install illuminated nameplate)
When attaching the illuminated nameplate 14 to the device main body 12 installed above the entrance/exit door of the protected compartment using the attachment/detachment jig 50, the release fitting 62 shown in FIG. The release piece 66 is turned horizontally, that is, removed from the upper surface of the flange 58. In this state, the illuminated nameplate 14 is stored in the box-shaped case 52, and the support rod 56 is attached to the device body. Align it with the slit opening 54 of No. 12 and push it in.

By this pushing, as shown in FIG. 14, the tip ball portion 18a of the locking pin 18 engages with the locking recess 48 of the illuminated nameplate 14, and the illuminated nameplate 14 is held on the device main body 12.

[Illuminated nameplate inspection jig: Fourth invention]
As shown in FIG. 19, this embodiment provides an inspection jig 70 for inspecting the illuminated nameplate 14 attached to the device main body 12.

The inspection jig 70 of this embodiment includes a jig main body 72 and a support rod 74. A slit opening 76 is provided in the jig main body 72, and the periphery of the slit opening 76 is a tapered surface. On the circuit board 78 inside the slit opening 76, a plurality of LEDs 79 functioning as, for example, inspection illumination means are arranged in two rows, for example.

As shown in FIG. 20, an operating section 92 is disposed at the lower end of the support rod 74, and the operating section 92 has a built-in battery power source using a secondary battery such as a lithium ion battery. An inspection switch 92b is provided. When the first inspection switch 92a is operated, a drive signal is supplied to the LEDs 79 on one column of the circuit board 78 to drive the LEDs 79 to emit light, and when the second inspection switch 92b is operated, the drive power is supplied to the LEDs 79 on the other column of the circuit board 78. It is supplied to the LED 79 and driven to emit light.

When inspecting the illuminated nameplate 14 attached to the device body 12, as shown in FIG. Attach. When the first inspection switch 92a of the operation unit 92 is operated in this state, the LEDs 79 in one row arranged on the circuit board 78 of the jig main body 72 are driven to emit light. , the light from the LED 79 enters the first light guiding layer 24 from below and illuminates the first printed layer 30, visualizing and displaying the display content of "display of the emission indicator light" and operating normally. It can be confirmed that

Furthermore, when the second inspection switch 92b of the operation section 92 is operated, the LEDs 79 in the other row arranged on the circuit board 78 of the jig main body 72 are driven to emit light. Light from the LED 79 enters the second light guide layer 26 from below and illuminates the second printed layer 32, visualizing and displaying display contents such as "display of evacuation guidance" and operating normally. This can be confirmed.

Therefore, the illuminated nameplate 14 operates normally by simply setting the inspection jig 70 on the illuminated nameplate 14, without requiring a special mechanism for performing inspection operations without emitting extinguishing gas in gas-based fire extinguishing equipment. It is possible to easily check whether the

[Modification of the present invention]
(Retention of illuminated nameplate)
In the above embodiment, the device main body 12 holds one side of the upper part of the illumination nameplate 14, but the device main body 12 is installed on the wall surface of the installation location so that the longitudinal direction is the vertical direction, and the illumination plate 14 is A structure may be adopted in which one side of the nameplate 14 is held.

(Illuminated nameplate attachment/removal holding structure)
The structure for attaching and detaching the illuminated nameplate is not limited to the locking mechanism 42 shown in FIG. 14, but may be any suitable mechanism or structure that holds the illuminated nameplate 14 by pushing it into the device body 12 and releases it by a predetermined operation. Don't prevent it.

(Illuminated nameplate inspection jig)
The inspection jig for the illuminated nameplate is not limited to the inspection jig 70 shown in FIGS. 19 and 20, but may be any suitable one as long as it allows inspection light to enter the side end of the illuminated nameplate 14 removed from the device main body 12. structure.

(Alternative to air layer)
Instead of the air layer, a transparent resin or the like may be used to separate the first light guide layer and the second light guide layer.

(half mirror)
In an embodiment including a mirror layer, the mirror may be a half mirror, and the display contents of the first printed layer and the second printed layer may be different. With this configuration, when the side located in front of the half mirror is displayed, the displayed content is reflected on the half mirror and can be seen clearly, and the side located behind the half mirror is displayed. In this case, the part displaying the display content on the back side of the half mirror is brighter than the part in front of the half mirror, so that the display content on the back side of the half mirror becomes visible.

(others)
Furthermore, the present invention includes appropriate modifications without impairing its objects and advantages, and is not limited by the numerical values shown in the above embodiments.

10: Display device for gas fire extinguishing equipment 11: Protective compartment 12: Device body 14, 14-1, 14-2: Illuminated nameplate 15: Doors 16a, 16b: Display contents 18: Locking pin 18a: Spherical tip 18b: Tapered head 20: Mounting holes 21, 54, 76: Slit opening 22: U-shaped light guide plate 24, 24-1, 24-2: First light guide layer 24a: Light guide layer 25: 27: Incident surface 26, 26 -1, 26-2: Second light guide layer 28, 28-1, 28-2: Air layer 30, 30-1, 30-2: First printed layer 30a: Printed layer 32, 32-1, 32- 2: Second printed layer 34: Circuit storage section 36, 78: Circuit board 37: Lid member 38, 79 : LED
40, 40-1, 40-2: Lead wire 42: Locking mechanism 44: Slide hole 45: Stopper ring 46: Coil spring 48: Locking recess 49: Tapered guide surface 50: Attachment/detachment jig 52: Box-shaped case 56, 74: Support rod 56a: Grip 58: Flange 60: Lock release mechanism 62: Release fitting 64: Shaft 66: Release piece 68: Engagement groove 69: Protrusion 70: Inspection jig 72: Jig main body
80, 82: Light guide plate
86: Mirror layer 86a, 86b: Mirror surface 88: Protective layer 90: Protective plate 92: Operation section 92a: First inspection switch 92b: Second inspection switch

Claims (1)

A first light guide layer on the front side and a second light guide layer on the back side are arranged to be separated by a predetermined width, and a first display content is displayed on the surface of the first light guide layer on the second light guide layer side. an illuminated nameplate having a laminated structure in which a first printed layer is formed with a printed layer, and a second printed layer is formed with a second display content printed on a surface of the second light guide layer on the first light guide layer side; ,
a device body that holds the illuminated nameplate;
illumination means for making the displayed content visible by inputting light from end surfaces of the first light guide layer and the second light guide layer;
Equipped with
The first light guiding layer and the second light guiding layer of the illuminated nameplate are formed by forming the first printed layer and the second printed layer on one surface of a plate-shaped member. The member is bent in a U shape so that the first printed layer and the second printed layer face each other ,
The illuminated nameplate is installed so that the front side is visible from the outside and the back side is installed so that it is not visible from the outside,
The first printed layer of the illuminated nameplate is printed with the first display content, which has a correct character arrangement when viewed from the front side and a reverse character arrangement when viewed from the back side,
The second printed layer of the illuminated nameplate has a correct character arrangement when viewed from the front side, and a reverse character arrangement when viewed from the back side, and the second printed layer has a different meaning from the first display content. A display device for gas fire extinguishing equipment, characterized in that display contents are printed .

Images